 import java.util.Scanner;

public class Example2_3 {

    public static void main (String args[ ]){

        System.out.println("请输入若干个数，每输入一个数回车确认");

        System.out.println("最后输入数字0结束输入操作");

        Scanner reader=new Scanner(System.in);

        double sum=0;

        double x = reader.nextDouble();

        while(x!=0){

           sum=sum+x;

           x=reader.nextDouble();

        }

        System.out.println("sum="+sum);

    }

}






